> ## Documentation Index
> Fetch the complete documentation index at: https://urantia.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Open Source

> Everything we build is MIT-licensed and free. Here's what that means and how to use it.

## Licensing

All code across the UrantiaHub ecosystem is released under the **MIT License**, meaning you can use, modify, and distribute it freely — including for commercial projects. No permission needed.

| What                                     | License                                                       | Details                  |
| ---------------------------------------- | ------------------------------------------------------------- | ------------------------ |
| All source code                          | [MIT](https://opensource.org/licenses/MIT)                    | Use it however you want  |
| Original content (guides, quotes, docs)  | [CC0 1.0](https://creativecommons.org/publicdomain/zero/1.0/) | Public domain dedication |
| The Urantia Book English text            | Public domain                                                 | Since 2006               |
| Audio narrations, embeddings, AI content | [CC0 1.0](https://creativecommons.org/publicdomain/zero/1.0/) | Public domain dedication |

## Repositories

All repos live under the [urantia-hub](https://github.com/urantia-hub) GitHub organization.

### Core Infrastructure

<CardGroup cols={2}>
  <Card title="urantia-dev-api" icon="server" href="https://github.com/urantia-hub/urantia-dev-api">
    Hono + Drizzle API on Cloudflare Workers. Full-text search, semantic search, OAuth, MCP server.
  </Card>

  <Card title="urantia-dev-sdks" icon="code" href="https://github.com/urantia-hub/urantia-dev-sdks">
    TypeScript SDKs — @urantia/api (typed client) and @urantia/auth (OAuth/PKCE).
  </Card>

  <Card title="urantia-dev-mintlify-docs" icon="book" href="https://github.com/urantia-hub/urantia-dev-mintlify-docs">
    This documentation site.
  </Card>

  <Card title="urantia-data-sources" icon="database" href="https://github.com/urantia-hub/urantia-data-sources">
    Scripts for managing the Cloudflare R2 data bucket (papers, audio, entities, embeddings).
  </Card>
</CardGroup>

### Applications

<CardGroup cols={2}>
  <Card title="OpenUrantia.com" icon="globe" href="https://github.com/urantia-hub/OpenUrantia.com">
    UrantiaHub reading platform — Next.js with bookmarks, notes, AI chat, reading progress, daily quotes.
  </Card>

  <Card title="urantia-dev-demo" icon="play" href="https://github.com/urantia-hub/urantia-dev-demo">
    Interactive demo site showcasing API features.
  </Card>

  <Card title="urantia-dev-example-app" icon="rocket" href="https://github.com/urantia-hub/urantia-dev-example-app">
    Minimal Next.js OAuth example app using @urantia/auth.
  </Card>

  <Card title="urantia-papers-plugin" icon="plug" href="https://github.com/urantia-hub/urantia-papers-plugin">
    MCP plugin for Claude Desktop and Cursor.
  </Card>
</CardGroup>

### Research & Media

<CardGroup cols={2}>
  <Card title="urantia-render" icon="video" href="https://github.com/urantia-hub/urantia-render">
    High-performance Rust video renderer for YouTube narrations.
  </Card>

  <Card title="urantia-860x-experiment" icon="flask" href="https://github.com/urantia-hub/urantia-860x-experiment">
    Computational verification of the 860x wavelength ratio claim against NIST CODATA physics constants.
  </Card>

  <Card title="data" icon="folder-open" href="https://github.com/urantia-hub/data">
    The Urantia Papers in structured JSON + MP3 audio files.
  </Card>
</CardGroup>

## Contributing

Every repo has a `README.md` with setup instructions. The general flow:

1. Fork the repo
2. Create a feature branch
3. Make your changes
4. Open a PR

Questions? Reach out at [kelson@urantia.dev](mailto:kelson@urantia.dev).

## Disclaimer

This is an independent community project by [Adams Technologies LLC](https://adamstechnologies.com). It is not affiliated with, endorsed by, or connected with Urantia Foundation. The original English text of *The Urantia Book* is in the public domain. All use of "Urantia" is nominative fair use to identify the subject matter.